WO2010116637A1 - 電子部品実装システムおよび電子部品実装方法 - Google Patents

電子部品実装システムおよび電子部品実装方法 Download PDF

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Publication number
WO2010116637A1
WO2010116637A1 PCT/JP2010/002086 JP2010002086W WO2010116637A1 WO 2010116637 A1 WO2010116637 A1 WO 2010116637A1 JP 2010002086 W JP2010002086 W JP 2010002086W WO 2010116637 A1 WO2010116637 A1 WO 2010116637A1
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WO
WIPO (PCT)
Prior art keywords
substrate
electronic component
mounting
component mounting
board
Prior art date
Application number
PCT/JP2010/002086
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
本村耕治
永福秀喜
境忠彦
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Priority to US13/255,945 priority Critical patent/US8817487B2/en
Priority to CN201080014961.8A priority patent/CN102388686B/zh
Priority to DE112010001544T priority patent/DE112010001544T5/de
Publication of WO2010116637A1 publication Critical patent/WO2010116637A1/ja

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/36—Assembling printed circuits with other printed circuits
    • H05K3/361—Assembling flexible printed circuits with other printed circuits
    • H05K3/363—Assembling flexible printed circuits with other printed circuits by soldering
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/06—Solder feeding devices; Solder melting pans
    • B23K3/0607—Solder feeding devices
    • B23K3/0638—Solder feeding devices for viscous material feeding, e.g. solder paste feeding
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
    • H05K13/04—Mounting of components, e.g. of leadless components
    • H05K13/046—Surface mounting
    • H05K13/0465—Surface mounting by soldering
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
    • H05K13/04—Mounting of components, e.g. of leadless components
    • H05K13/046—Surface mounting
    • H05K13/0469—Surface mounting by applying a glue or viscous material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/36—Assembling printed circuits with other printed circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
    • H05K2201/10954—Other details of electrical connections
    • H05K2201/10977—Encapsulated connections
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/303—Surface mounted components, e.g. affixing before soldering, aligning means, spacing means
    • H05K3/305—Affixing by adhesive
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/341—Surface mounted components
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/3457—Solder materials or compositions; Methods of application thereof
    • H05K3/3485—Applying solder paste, slurry or powder

Definitions

  • the present invention is configured by connecting a plurality of electronic component mounting apparatuses in series.
  • the electronic component is mounted on the first substrate, and the first substrate and the second substrate on which the electronic component is previously mounted are provided.
  • the present invention relates to an electronic component mounting system to be connected and an electronic component mounting method using the electronic component mounting system.
  • a configuration in which individual functional modules such as CCD cameras and display panels are connected to a main electronic circuit module provided on a rigid substrate via a film-like flexible substrate Is generally used.
  • a method of connecting the terminal provided on the flexible substrate to the circuit electrode of the rigid substrate a method of conducting the terminal and the circuit electrode using an anisotropic conductive adhesive containing conductive particles in a thermosetting resin (for example, see Patent Document 1).
  • solder particles are used as conductive particles, and the flexible substrate and the rigid substrate are bonded together by a thermosetting resin, and the terminals of the flexible substrate are soldered to the circuit substrate of the rigid substrate to electrically conduct. I try to let them.
  • the conventional techniques including the above-mentioned patent document examples have the following problems due to the process configuration. That is, in the prior art, the component mounting process for mounting the electronic component on the rigid board and the board connecting process for connecting the flexible board to the rigid board on which the component mounting has been completed are individually performed as separate processes. For this reason, the rigid board after the reflow in the component mounting process is stocked before being sent to the board connecting process, and the rigid board absorbs moisture during this stock time. For this reason, in the board
  • an object of the present invention is to provide an electronic component mounting system and an electronic component mounting method capable of ensuring high connection reliability.
  • the electronic component mounting system is configured by connecting a plurality of electronic component mounting devices in series, mounting the electronic component on the first substrate, and connecting the first substrate and the second substrate.
  • the plurality of electronic component mounting devices include a solder printing device that prints a solder bonding paste on the first substrate, and the first printed after the paste is printed.
  • a component mounting device for mounting the electronic component on a substrate; and a reflow device for soldering the electronic component to the first substrate by heating the first substrate on which the electronic component is mounted;
  • Component mounting for mounting an electronic component on the first substrate while transporting the first substrate along a substrate transport path in which substrate transport mechanisms respectively connected to the plurality of electronic component mounting devices are connected in series
  • a component mounting unit that performs the operation, and a substrate transport mechanism in which a transport path is coupled to the substrate transport mechanism of the reflow device that is located on the most downstream side in the component mounting unit.
  • a board connection portion for performing board connection work for connecting the second board to the board.
  • An electronic component mounting method of the present invention is an electronic component mounting method for mounting an electronic component on a first substrate and connecting the first substrate and a second substrate, and soldering the first substrate to the first substrate.
  • the solder printing step, the component mounting step, and the reflow step are performed by a component mounting unit configured by the same electronic component mounting line, and the board connection step is performed at the bottom of the component mounting unit.
  • Substrate conveying mechanism and the transport path of the reflow device that position is executed by the board connecting portion having a substrate transfer mechanism coupled to.
  • the substrate transport mechanism of the component mounting unit that performs the component mounting operation for mounting the electronic component on the first substrate and the substrate connection for connecting the second substrate to the first substrate on which the mounting of the electronic component has been completed.
  • the first board after the reflow is completed in the component mounting process can be immediately sent to the board connection process by coupling the board transport mechanism of the board connection section that performs the work with the transport path. It is possible to ensure high connection reliability by eliminating the occurrence of voids in the connection portion due to vaporization.
  • the top view which shows the structure of the electronic component mounting system of one embodiment of this invention (A) And (b) is explanatory drawing of the board
  • inspection apparatus which comprises the electronic component mounting system of one embodiment of this invention
  • the fragmentary sectional view of the electronic component mounting apparatus which comprises the electronic component mounting system of one embodiment of this invention 1 is a partial cross-sectional view of a bonding material supply / board mounting device constituting an electronic component mounting system according to an embodiment of the present invention;
  • the fragmentary sectional view of the thermocompression bonding apparatus which comprises the electronic component mounting system of one embodiment of this invention (A) And (b) is process explanatory drawing of the electronic component mounting method by the electronic component mounting system of one embodiment of this invention (A) And (b) is process explanatory drawing of the electronic component mounting
  • FIG. 1 is a plan view showing a configuration of an electronic component mounting system according to an embodiment of the present invention
  • FIG. 2 is an explanatory diagram of a substrate to be mounted in the electronic component mounting system according to an embodiment of the present invention
  • FIG. 4 is a partial cross-sectional view of a solder printing apparatus that constitutes an electronic component mounting system according to an embodiment of the present invention.
  • FIG. 4 is a partial cross-sectional view of a coating / inspection apparatus that constitutes an electronic component mounting system according to an embodiment of the present invention.
  • FIG. 5 is a partial cross-sectional view of a component mounting apparatus constituting an electronic component mounting system according to an embodiment of the present invention
  • FIG. 6 is a bonding material supply / board mounting which constitutes an electronic component mounting system according to an embodiment of the present invention.
  • FIG. 7 is a partial cross-sectional view of a thermocompression bonding apparatus constituting an electronic component mounting system according to an embodiment of the present invention, and FIGS. 8, 9, 10, 11, and 12 illustrate the present invention. Electricity by the electronic component mounting system of one embodiment It is a process explanatory view of a component mounting method.
  • the electronic component mounting system 1 includes a plurality of electronic component mounting devices, a solder printing device M1, a coating / inspection device M2, a component mounting device M3, a reflow device M4, a bonding material supply / substrate mounting device M5, and a thermocompression bonding device M6. It is configured to be connected in series.
  • Each device includes a substrate transport mechanism 3 disposed in the X direction (substrate transport direction) at the center of the base 2.
  • the substrate transport mechanism 3 of each device is connected to the substrate transport mechanism 3 of an adjacent device.
  • a board transfer path that is connected in series and passes through the electronic component mounting system 1 is configured.
  • the main board 4 to be mounted with electronic components is carried into the board transfer mechanism 3 of the solder printing apparatus M1 from the upstream side (left side in FIG. 1) (see arrow a), and sequentially passes through the electronic component mounting system 1 in the X direction. Be transported.
  • FIG. 2A shows the main board 4 (first board) on which electronic components are mounted, and the module board 5 (second board) shown in FIG. 2B is connected to the main board 4. Is done.
  • the main board 4 and the module board 5 constitute an electronic circuit of a small terminal device such as a mobile phone, and are mounted in the housing with the module board 5 connected to the main board 4.
  • the main board 4 is made of glass epoxy resin or the like, and as shown in FIG. 2A, the mounting surface 4a of the main board 4 is positioned at one edge to connect the module board 5 to the mounting surface 4a.
  • a plurality of connection terminals 4b (first connection sites) are formed.
  • Electrodes 4c, 4d, and 4e to which terminals of electronic components are connected are formed at the center of the mounting surface 4a.
  • the electrodes 4c, 4d, and 4e are solder-bonded with terminals 8a formed at the ends of the chip-type component 8 and bumps 9a formed on the lower surfaces of the bumped components 9A and 9B, respectively (see FIGS. 9 and 10). ).
  • the module substrate 5 has a configuration in which a flexible substrate 5c is connected in advance to a sub-substrate 5a on which electronic components 5b for drivers are mounted in advance.
  • a flexible terminal 5e (second connection portion) connected to the connection terminal 4b of the main substrate 4 is formed on the lower surface side of the connection end 5d of the flexible substrate 5c.
  • the solder printing apparatus M1 has a function of printing cream solder, which is a paste for solder bonding, on the main board 4.
  • the substrate transport mechanism 3 is provided with a substrate receiving portion 18 that can be moved up and down, and a mask plate 16 extended on a mask frame 15 is disposed above the substrate transport mechanism 3. Yes.
  • the main substrate 4 transported from the upstream side by the substrate transport mechanism 3 is supported on the lower surface side by the substrate lower receiving portion 18 and further abutted on the lower surface side of the mask plate 16 while being clamped from both sides by the clamp member 17. .
  • a Y-axis table 11 is arranged in the Y direction at the end of the base 2 in the X direction, and the X-axis beam 12 mounted on the Y-axis table 11 by driving the Y-axis table 11 is in the Y direction.
  • a squeegee unit 13 having a squeegee member 14 at the lower end is mounted on the X-axis beam 12. By driving the squeegee unit 13, the squeegee member 14 moves up and down. Abuts the top surface. The cream solder 6 is supplied onto the mask plate 16 and the squeegee member 14 is lowered.
  • the Y-axis table 11 is driven to move the squeegee unit 13 in the Y direction (arrow b).
  • the solder paste 6 is printed on the electrodes 4c, 4d, and 4e provided on the mask plate 16 through pattern holes (not shown) provided on the mask plate 16 corresponding to the electrodes 4c, 4d, and 4e (see FIG. 8). ).
  • the application / inspection apparatus M2 has a function of inspecting the printing state of the cream solder 6 printed on the main board 4 by the solder printing apparatus M1 and applying an adhesive 7 for temporarily fixing components to the main board 4. .
  • the substrate transport mechanism 3 is provided with substrate support pins 19 that can be moved up and down.
  • the main substrate 4 transported from the upstream side by the substrate transport mechanism 3 is lower side by the substrate support pins 19. Is undertaken.
  • a coating unit 20 is provided so as to be movable in the X direction by the first X-axis table 12A, and an inspection unit 22 is provided so as to be movable in the X direction by the second X-axis table 12B.
  • a dispenser 21 having a coating nozzle 21a at the lower end is mounted on the coating unit 20 so as to be movable up and down.
  • the adhesive 7 is discharged from the application nozzle 21 a by operating the discharge mechanism built in the dispenser 21.
  • the inspection unit 22 has a function of imaging the main board 4 positioned below, and the imaging result is subjected to recognition processing by a recognition processing unit (not shown), whereby the cream solder 6 printed on the main board 4 is processed. The print status is checked.
  • a Y-axis table 11 is disposed in the Y direction at the end of the base 2 in the X direction, and the first X-axis table 12A and the second X-axis table 12B can freely move in the Y direction on the Y-axis table 11, respectively. It is installed individually.
  • the first X-axis table 12A and the second X-axis table 12B reciprocate individually in the Y direction.
  • the coating unit 20 and the inspection unit 22 are respectively in the X direction with respect to the main substrate 4 positioned below, Move in the Y direction.
  • the application unit 20 applies the adhesive 7 to an arbitrary point on the main substrate 4, and the application unit 20 can inspect the printing state of the cream solder 6 printed at an arbitrary position on the main substrate 4.
  • the component mounting apparatus M3 has a function of mounting electronic components on the main board 4 after the cream solder 6 is printed.
  • the substrate transport mechanism 3 is provided with substrate support pins 19 that can be moved up and down, and the main substrate 4 transported from the upstream side by the substrate transport mechanism 3 is lower side by the substrate support pins 19. Is undertaken.
  • a first component supply unit 25A and a second component supply unit 25B are disposed on both sides of the substrate transport mechanism 3, respectively.
  • a plurality of tape feeders 26 are arranged in parallel in the first component supply unit 25A.
  • the tape feeder 26 pitches a carrier tape containing a relatively small electronic component such as the chip-type component 8 by a built-in tape feeding mechanism, so that the first feeder head 23A, which will be described below, picks up a component. Supply these electronic components.
  • a component tray 27 for storing relatively large components such as bumped components 9A and 9B having bumps formed on the lower surface in a predetermined regular arrangement is disposed.
  • the second mounting head 23 ⁇ / b> B described below accesses the component storage position of the component tray 27, these electronic components are taken out from the component tray 27.
  • a Y-axis table 11 is disposed in the Y direction at the end of the base 2 in the X direction, and the first X-axis table 12A and the second X-axis table 12B can freely move in the Y direction on the Y-axis table 11, respectively. It is installed individually.
  • the first X-axis table 12A and the second X-axis table 12B are mounted with a first mounting head 23A and a second mounting head 23B each having a first suction nozzle 24A and a second suction nozzle 24B at their lower end portions.
  • the first mounting head 23A sucks and holds the chip-type component 8 by the first suction nozzle 24A
  • the second mounting head 23B sucks and holds the bumped component 9A and the bumped component 9B by the second suction nozzle 24B.
  • the first X-axis table 12A and the second X-axis table 12B reciprocate individually in the Y direction.
  • the first mounting head 23A and the second mounting head 23B have the first component supply unit 25A and the second component respectively. It freely moves between the component supply unit 25B and the main substrate 4 positioned by the substrate transport mechanism 3.
  • the first mounting head 23A mounts the chip-type component 8 taken out from the tape feeder 26 of the first component supply unit 25A at an arbitrary mounting position of the main substrate 4 (arrow c), and the second suction nozzle 24B
  • the bumped components 9A and 9B taken out from the component tray 27 of the second component supply unit 25B are mounted at any mounting position on the main board 4 (arrow d).
  • the reflow apparatus M4 heats the main substrate 4 on which electronic components such as the chip-type component 8 (see FIG. 5) and the bumped components 9A and 9B are mounted, and solders these electronic components to the main substrate 4. It has a function.
  • a heating furnace 28 provided with a heater is disposed on the main substrate 4, and the substrate transport mechanism 3 is vertically provided in the X direction in the heating furnace 28.
  • the heating furnace 28 includes a temperature adjusting mechanism, and the main board 4 after mounting the components carried into the heating furnace 28 is heated according to a predetermined temperature profile in the process of being transferred downstream by the board transfer mechanism 3. Is done.
  • the cream solder 6 supplied to the electrodes 4c, 4d, 4e of the main substrate 4 is melted and solidified, and the terminals 8a of the chip-type component 8 and the bumps 9a of the bumped components 9A, 9B are respectively connected to the electrodes 4c, 4d, 4e is soldered to complete the component mounting operation on the main board 4.
  • the solder printing device M1, the coating / inspection device M2, the component mounting device M3, and the reflow device M4 are mainly connected along the substrate transport path in which the substrate transport mechanisms 3 provided in these electronic component mounting devices are connected in series.
  • a component mounting unit is configured to perform a component mounting operation for mounting electronic components on the main substrate 4 while transporting the substrate 4.
  • the substrate transport mechanism 3 of the reflow device M4 located on the most downstream side in this component mounting portion is connected to the substrate transport mechanism 3 of the bonding material supply / substrate mounting device M5 described below.
  • the main substrate 4 for which the work has been completed can be immediately transferred to the bonding material supply / substrate mounting apparatus M5 without taking time.
  • the substrate transport mechanism 3 of the reflow apparatus M4 and the bonding material supply / may be sufficient.
  • the transport path between the substrate transport mechanism 3 of the reflow device M4 and the substrate transport mechanism 3 of the bonding material supply / substrate mounting device M5 located at the most downstream in the component mounting portion is any automatic transport means such as a connected conveyor.
  • the main board 4 after the completion of the component mounting operation can be transferred to the board connection work of the next process within a predetermined time.
  • the bonding material supply / substrate mounting apparatus M5 In order to connect the module substrate 5 to the main substrate 4, the bonding material supply / substrate mounting apparatus M5 contains solder particles in a thermosetting resin within a predetermined range on the plurality of connection terminals 4b provided on the main substrate 4. A function of supplying the bonded bonding material 10, and a function of mounting the module substrate 5 on the main substrate 4 and landing the connection end 5 d of the module substrate 5 on the connection terminal 4 b via the bonding material 10. .
  • a Y-axis table 11 is disposed in the Y direction at the end of the base 2 in the X direction, and the first X axis table 12A and the second X axis table 12B are movable in the Y direction on the Y axis table 11, respectively. It is installed individually. As shown in FIG. 6, above the substrate transport mechanism 3, the bonding material application unit 30 is movable in the X direction by the first X axis table 12A, and the mounting head 32 is moved in the X direction by the second X axis table 12B. It is provided freely.
  • a dispenser 31 having a coating nozzle 31a at the lower end is mounted on the bonding material coating unit 30 so as to be movable up and down.
  • the bonding material 10 When the dispenser 31 is lowered and the dispensing nozzle 31a is brought close to the upper surface of the main substrate 4 and the ejection mechanism built in the dispenser 31 is operated, the bonding material 10 is ejected from the coating nozzle 31a. It is applied to the substrate 4.
  • the bonding material 10 contains solder particles in a thermosetting resin such as an epoxy resin, and further contains an active ingredient having an action of removing an oxide film formed on the surfaces of the solder particles and the connection terminals 4b to be bonded. It has a composition.
  • the mounting head 32 includes a suction tool 33 having a special shape at the lower end, and the suction tool 33 can hold the module substrate 5 shown in FIG. 2B by two suction parts 33a and 33b. (See FIG. 11B).
  • a substrate supply unit 34 in which a substrate storage tray 35 for storing the module substrates 5 in a regular arrangement is disposed on the side of the substrate transport mechanism 3.
  • the suction tool 33 has a heating function, and can heat the module substrate 5.
  • FIG. 6, for convenience of illustration, the posture in which the module substrate 5 is held by the suction tool 33 is illustrated as being rotated 90 degrees around the vertical axis from the actual holding posture.
  • the first X-axis table 12A and the second X-axis table 12B reciprocate individually in the Y direction.
  • the bonding material application unit 30 and the mounting head 32 are respectively positioned with respect to the main substrate 4 positioned below. Move in the X and Y directions.
  • the bonding material application unit 30 supplies the bonding material 10 to the mounting surface 4a formed on the edge of the main substrate 4 by application.
  • the mounting head 32 can land the connection end 5d of the module substrate 5 taken out from the substrate storage tray 35 of the substrate supply unit 34 on the connection terminal 4b of the main substrate 4 via the bonding material 10 (arrow). e).
  • a method of supplying the bonding material 10 onto the connection terminal 4b see FIG. 2
  • a method of applying the bonding material 10 by the bonding material application unit 30 is used. You may employ
  • thermocompression bonding apparatus M6 heats the main board 4 on which the module board 5 is mounted by the bonding material supply / board mounting apparatus M5 to connect the flexible terminal 5e as the second connection part and the connection as the first connection part. It has a function of joining the terminal 4b with the joining material 10.
  • a Y-axis table 11 is disposed in the Y direction at the end of the base 2 in the X direction, and the first X axis table 12A and the second X axis table 12B are movable in the Y direction on the Y axis table 11, respectively. It is installed individually.
  • the first X-axis table 12A and the second X-axis table 12B are each equipped with a heating head 36 having a heating tool 37 that can be raised and lowered at the lower end.
  • the heating tool 37 has a built-in heating mechanism, and the heating tool 37 heated to a predetermined temperature is lowered with respect to the main substrate 4 and mounted on the connection terminal 4b via the bonding material 10 (see FIG. 12). By bringing the heating tool 37 into contact with the upper surface of the connection end 5d, the bonding material 10 is heated and the connection terminal 4b is bonded to the flexible terminal 5e.
  • the solder component contained in the bonding material 10 is melted and interposed in the bonding surface between the connection terminal 4b and the connection end 5d, thereby ensuring electrical continuity between the connection terminal 4b and the flexible terminal 5e.
  • the thermosetting resin such as an epoxy resin constituting the bonding material 10 is thermally cured by heating, so that the connection end 5 d is fixed to the mounting surface 4 a of the main substrate 4.
  • the Y-axis table 11, the first X-axis table 12A, and the bonding material application unit 30 are connected to the solder particles on the connection terminals 4b as the first connection parts provided on the main substrate 4 that is the first substrate.
  • This is a bonding material supply section for supplying a bonding material 10 containing a thermosetting resin.
  • the Y-axis table 11, the second X-axis table 12 B, and the mounting head 32 are mounted on the main substrate 4 that is the first substrate and the module substrate 5 that is the second substrate, and the flexible substrate provided on the module substrate 5.
  • This is a board mounting portion for landing the terminal 5 e on the connection terminal 4 b through the bonding material 10.
  • thermocompression bonding apparatus M6 including the heating head 36 and the heating tool 37 heats the module substrate 5 on which the main substrate 4 is mounted, and a heating unit that joins the flexible terminal 5e and the connection terminal 4b with the joining material 10. It has become. That is, the bonding material supply / board mounting apparatus M5 and the thermocompression bonding apparatus M6 have the board transfer mechanism 3 in which the board transfer mechanism 3 of the reflow apparatus M4 located on the most downstream side in the above-described component mounting portion is coupled with the transfer path. Then, a board connecting portion for performing board connecting work for connecting the module board 5 to the main board 4 on which mounting of the electronic components is completed is configured.
  • thermocompression bonding method such as the thermocompression bonding apparatus M6 as the heating unit in the substrate connection part
  • the atmosphere is set to a temperature at which the solder component in the bonding material 10 is melted and the thermosetting reaction of the thermosetting resin proceeds. You may make it use the reflow apparatus which can set temperature.
  • FIG. 8A shows the main board 4 carried into the board conveyance mechanism 3 of the solder printing apparatus M1.
  • the mounting surface 4a of the main substrate 4 is formed with a plurality of connection terminals 4b for connecting the module substrate 5 located on one edge, and an electronic component is formed at the center of the mounting surface 4a. Electrodes 4c, 4d, and 4e to which these terminals are connected are formed.
  • the main board 4 is carried into the solder printing apparatus M1, and the solder solder cream solder 6 is printed on the main board 4 here (solder printing process).
  • the cream solder 6 is supplied to the upper surfaces of the electrodes 4c, 4d, and 4e with a predetermined thickness.
  • the main board 4 after the solder printing is carried into the application / inspection apparatus M2, and the adhesive 7 is applied by the application unit 20 here. That is, as shown in FIG. 9A, the dispenser 21 is lowered with respect to the main board 4, and the adhesive 7 for component temporary fixation is applied to a plurality of application points set in advance for each component mounting position. Apply sequentially.
  • the inspection of the solder printed state is performed by imaging the main board 4 by the inspection unit 22.
  • the main board 4 is carried into the component mounting apparatus M3, and the component mounting for mounting electronic components by the first mounting head 23A and the second mounting head 23B on the main board 4 after the cream solder 6 is printed here.
  • Work is executed (part mounting process). That is, as shown in FIG. 9B, the terminal 8a of the chip-type component 8 is lowered with respect to the electrode 4c and landed (arrow f), and the bump 9a of the bumped component 9A is lowered with respect to the electrode 4d.
  • the bump 9a of the bumped component 9B is lowered with respect to the electrode 4e and landed (arrow h).
  • the main board 4 after mounting the components is carried into the reflow apparatus M4, and these electronic components are heated by heating the main substrate 4 on which the electronic components such as the chip-type component 8 and the bumped components 9A and 9B are mounted.
  • these electronic components are solder-bonded to the main substrate 4 (reflow process).
  • the terminal 8a of the chip-type component 8 is soldered to the electrode 4c, and the bumps 9a of the bumped components 9A and 9B are soldered to the electrodes 4d and 4e, respectively.
  • the component mounting operation for mounting electronic components such as the chip-type component 8 and the bumped components 9A and 9B on the main substrate 4 and soldering them is completed.
  • the solder printing process, the component mounting process, and the reflow process in this component mounting operation are executed by the component mounting units (solder printing apparatus M1 to reflow apparatus M4) configured by the same electronic component mounting line.
  • the main board 4 on which mounting of the electronic components is completed in this way is sent to a board connecting portion composed of a bonding material supply / board mounting apparatus M5 and a thermocompression bonding apparatus M6, where the module board 5 is connected to the main board 4. (Board connection process).
  • the board connection portion in which this board connection process is performed has a configuration including the board transport mechanism 3 of the reflow device M4 located on the most downstream side in the component mounting section and the board transport mechanism 3 in which the transport path is coupled.
  • the main substrate 4 is immediately carried into the bonding material supply / substrate mounting device M5 without being stocked.
  • the bonding material 10 in which solder particles are contained in a thermosetting resin is supplied to the connection terminal 4b which is the first connection portion of the main board 4 with the module board 5.
  • the bonding material supply process That is, as shown in FIG. 10B, first, the bonding material 10 is applied to a predetermined range on the connection terminal 4 b of the main board 4 that has been loaded.
  • the bonding material 10 is applied onto the connection terminal 4b by lowering the dispenser 31 above the connection terminal 4b and moving the dispenser 31 in the Y direction while discharging the bonding material 10 from the application nozzle 31a.
  • the module substrate 5 is mounted on the main substrate 4, and the flexible terminals 5e provided on the module substrate 5 are landed on the connection terminals 4b through the bonding material 10 (substrate mounting step).
  • a holding jig 38 for supporting the sub-substrate 5a of the module substrate 5 from below is placed at a position adjacent to the main substrate 4 in the substrate transport mechanism 3.
  • the module substrate 5 is taken out from the substrate supply unit 34 by the suction tool 33, and alignment for connection with the main substrate 4 is performed as shown in FIG.
  • the suction tool 33 includes two branched suction portions 33a and 33b, and the electronic component 5b mounted on the sub-board 5a is sucked and held by the suction portion 33a and extended from the sub-board 5a.
  • the connection end 5d of 5c is sucked and held by the suction portion 33b.
  • the module substrate 5 having a complicated shape and difficult to be stably held by a normal method can be held in a correct posture.
  • the sub board 5a sucked and held by the sucking part 33a is placed on the holding jig 38, and the connection end part 5d sucked and held by the sucking part 33b is joined.
  • the material 10 is landed on the connection terminal 4b.
  • the flexible terminal 5e (FIG. 2) formed in the lower surface of the connection end part 5d will be in the state adjoined to the surface of the connection terminal 4b.
  • the main substrate 4 is transported to the thermocompression bonding apparatus M6 together with the module substrate 5 placed on the holding jig 38, and the main substrate 4 on which the module substrate 5 is mounted is heated so that the flexible terminal 5e, the connection terminal 4b, Are bonded by the bonding material 10 (heating step). That is, as shown in FIG. 12, the heating tool 37 heated to a predetermined temperature is lowered to the upper surface of the connection end portion 5d overlaid on the connection terminal 4b (arrow i), and the main board 4 near the connection terminal 4b is moved. Heating is performed for a predetermined time by the heating tool 37.
  • the solder component contained in the bonding material 10 is melted to connect the connection terminal 4b and the flexible terminal 5e, and the thermosetting resin constituting the bonding material 10 is thermoset to connect the connection end 5d. Is fixed to the mounting surface 4 a of the main substrate 4. Thereby, the flexible terminal 5e and the connection terminal 4b are joined by the joining material 10. At this time, the oxide film generated on the surface of the solder particles, the connection terminals 4b to be joined, and the like is removed by the action of the active component blended in the joining material 10, and good solderability is ensured.
  • the electronic component mounting system 1 shown in the present embodiment includes the solder printing apparatus M1 that prints the cream solder 6 on the main substrate 4, and the electronic component on the main substrate 4 after the cream solder 6 is printed. And a reflow device M4 that solders the electronic component to the main substrate 4 by heating the main substrate 4 on which the electronic component is mounted, and mounts the electronic component on the main substrate 4.
  • a board of a board connecting portion for carrying out board connecting work for connecting the module board 5 to the main board 4 on which the mounting of the electronic parts and the board transport mechanism 3 of the component mounting section is provided.
  • the transport mechanism 3 is configured to be coupled by a direct transport path or a transport path via another transport means.
  • the main board 4 after the reflow is completed in the component mounting process is immediately sent to the board connection process without being temporarily stocked as in the conventional method.
  • the problem that has occurred in the conventional method that is, the moisture present in the main substrate 4 is vaporized in the substrate connection process due to moisture absorption during the stock time, and voids are generated in the connection portion. Sex can be secured.
  • thermosetting resin a composition in which solder particles are contained in a thermosetting resin.
  • ACF anisotropic conductive material in which conductive particles are contained in a thermosetting resin may be used.
  • the electronic component mounting system and the electronic component mounting method of the present invention have an effect that high connection reliability can be ensured, and are configured by connecting a plurality of electronic component mounting devices in series. This is useful in an electronic component mounting system that mounts an electronic component on and connects the first board and the second board.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)
  • Supply And Installment Of Electrical Components (AREA)
PCT/JP2010/002086 2009-04-07 2010-03-24 電子部品実装システムおよび電子部品実装方法 WO2010116637A1 (ja)

Priority Applications (3)

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US13/255,945 US8817487B2 (en) 2009-04-07 2010-03-24 Electronic component mounting system and electronic component mounting method
CN201080014961.8A CN102388686B (zh) 2009-04-07 2010-03-24 电子元件安装系统和电子元件安装方法
DE112010001544T DE112010001544T5 (de) 2009-04-07 2010-03-24 Elektronikbauteil-Einbausystem und Elektronikbauteil-Einbauverfahren

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JP2009092616A JP4998503B2 (ja) 2009-04-07 2009-04-07 電子部品実装システムおよび電子部品実装方法
JP2009-092616 2009-04-07

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CN102388686A (zh) 2012-03-21
CN102388686B (zh) 2015-07-22
JP4998503B2 (ja) 2012-08-15
DE112010001544T5 (de) 2012-09-13
JP2010245308A (ja) 2010-10-28
US8817487B2 (en) 2014-08-26
US20120014084A1 (en) 2012-01-19

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